Catherine Dunne (born 1954) is an Irish writer. She was born in Dublin and studied English and Spanish at Trinity College, Dublin, before becoming a teacher. In 2013, she was awarded the Giovanni Boccaccio International Prize for Fiction for The Things We Know, which was published in Italy as Quel che ora sappiamo. Dunne received the Irish PEN Award for Literature in 2018.
, Dunne had written 12 novels and a work of non-fiction. Her first novel, published in 1997, was In the Beginning, which was described in Publishers Weekly as "an auspicious debut".